Formula: C₄H₄Na₂O₆ • 2H₂O CAS: 6106-24-7 EC No.: 212-773-3 M (Molar Mass): 230.08 g/mol

Assay (Titration): ≥ 99.0 % Appearance: White crystalline powder. Optical Rotation (20°C, 10% in water): +26.5° to +28.5° (for L-form) pH (5% solution): 7.0 - 9.0 Loss on Drying (105°C): 14.0 - 17.0 % (theoretical ~15.65%) Insoluble Matter: ≤ 0.01 % Chloride (Cl): ≤ 0.005 % Sulfate (SO₄): ≤ 0.01 % Heavy Metals (as Pb): ≤ 10 ppm